kubeadm init --apiserver-advertise-address 192.168.1.90 --pod-network-cidr=10.244.0.0/16 --kubernetes-version=v1.20.4
export KUBECONFIG=/etc/kubernetes/admin.conf
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

echo "gao kai: please install flannel , ipvs"